目的：本研究探討不同層級的衝浪者之間在下肢肌力與動態平衡的表現上是否存在差異。方法：招募22名具有衝浪習慣之衝浪者，以衝浪經驗分為休閒組及新手組。透過測力板進行反向跳及BOSU平衡測試，以及使用Y字平衡測試儀進行Y字平衡測試。利用描述分析與獨立樣本t檢定進行組間各項檢定。結果：下肢動態肌力方面：在跳躍高度、峰值力、相對峰值力、標準化發力率等表現上，休閒組與新手組衝浪者之間皆無顯著差異。動態平衡方面：休閒組與新手組衝浪者之間在Y字平衡測試的表現上，不管左右腳的表現為何，平均觸及距離、相對觸及距離和複合觸及距離都皆無顯著差異；在BOSU平衡測試表現中，CoP置信橢圓面積、CoP平均速度和AP及ML振幅也無顯著差異。結論：雖然休閒衝浪者的衝浪經驗高於新手衝浪者，但在下肢動態肌力表現上沒有差異，這可能與捕捉波浪大小和次數，以及執行複雜動作的機會有關。而在動態平衡表現上，Y字平衡測試表現無差異可能與下肢肌力相關。另外與乘浪相似的平衡任務BOSU平衡測試的CoP表現也沒有差異，則可能與視覺和手部的限制有關。建議未來研究人員要探討休閒或新手衝浪者之身體表現時，應考慮到衝浪頻率及衝浪者的水平。而不同的衝浪頻率是否會影響衝浪者的身體表現則可以進一步做探討。

Purpose: This study investigated whether there are differences in lower limb muscle strength and dynamic balance performance between surfers of different levels. Methods: 22 surfers with surfing habits were recruited and categorized into recreational and novice groups based on their surfing experience. Countermovement Jump and BOSU Balance Tests with a force plate, and Y Balance Test with a Y-balance test kit. Descriptive analyses and independent sample t-tests were used for intergroup validation. Results: Lower limb dynamic muscle strength: there were no significant differences between the recreational and novice surfers in terms of jump height, peak force, relative peak force, and rate of force development standardization. Dynamic balance: In the Y-balance test, there were no significant differences in average reach distance, Relative reach distance, and Composite reach distance between the recreational and novice surfers, regardless of the performance of the left and right feet; There were also no significant differences between the two groups of surfers in terms of the confidence ellipse area of the CoP, CoP mean velocity, and the AP and ML amplitudes. Conclusion: Although recreational surfers had more surfing experience than novice surfers, there was no difference in lower limb dynamic muscle strength performance, which may be related to the size and number of waves captured and the opportunity to perform complex maneuvers. In terms of dynamic balance performance, the lack of difference in performance on the Y-balance test may be related to lower limb muscle strength. In addition, there was no difference in CoP performance on the BOSU balance test, a similar balancing task to wave riding, which may be related to visual and hand limitations. It is suggested that future researchers should consider the frequency of surfing and the level of surfers when investigating the physical performance of recreational or novice surfers. Whether different surfing frequencies affect the physical performance of surfers can be further investigated.

摘要 I
ABSTRACT 　II
誌謝 IV
表次 VII
圖次 VIII
第一章 緒論 1
第一節 研究背景 1
第二節 研究目的 3
第三節 名詞操作型定義 3
第四節 研究範圍與限制 　　　　　　6
第二章 文獻探討 　7
第一節 衝浪者的性能 7
第二節 下肢肌力研究 9
第三節 動態平衡研究 11
第四節 文獻總結 　　17
第三章 研究方法 　　18
第一節 研究架構 　18
第二節 研究對象 　19
第三節 研究日期與地點 19
第四節 實驗設備與器材 20
第五節 實驗流程與步驟 24
第六節 數據分析 　　　28
第七節 統計分析 　　33
第四章 結果 34
第一節 不同層級衝浪者之CMJ表現之差異 34
第二節 不同層級衝浪者之YBT表現之差異 36
第三節 不同層級衝浪者之BBT表現之差異 39
第五章 討論與結論 　42
第一節 不同層級衝浪者之CMJ表現之差異 42
第二節 不同層級衝浪者之YBT表現之差異 43
第三節 不同層級衝浪者之BBT表現之差異 44
第四節 結論與建議 　　　45
參考文獻 　　47
附錄一 　　 57

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